The investigators will use an intradermal capsaicin injection in the forearm to induce a state of localized pain. This localized pain will be measured by different means, and analysed locally and distally by so called quantitative sensory testing. The primary endpoint of measure is the difference in pain perception with and without benzodiazepines/GABA-Agonists around the injection point of capsaicin. The secondary endpoints are to measure pain modulation locally and distally by different quantitative tests as electricity, pressure pain thresholds, and ice water tests.